<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<p><a href="linked.html" target="nav">linked</a> (nav)</p>

<iframe name="nav" src="frame.html"></iframe>

<iframe name="nav2" src="frame2.html"></iframe>

<iframe name="nav3" src="frame3.html"></iframe>
</body>
</html>